Loss per common share (Tables)

3 Months Ended

Mar. 31, 2016

Basic and diluted loss per share for the three months ended March 31, 2016 and 2015, respectively, were as follows:



	Three months ended March 31,
	2016			2015
Net loss attributable to stockholders	$	(893,168	)	$	(617,464	)
Weighted average shares outstanding - Basic and diluted	18,478,990			16,224,642
Basic and diluted loss per share	$	(0.05	)	$	(0.04	)
Anti-dilutive shares underlying stock options outstanding	1,123,200			1,254,325
Anti-dilutive convertible debentures	890,207			555,556